EP2784293A4 - DEVICE FOR DETECTING THE AIR-FUEL RATIO AND METHOD FOR DETECTING THE AIR-FUEL RATIO - Google Patents

DEVICE FOR DETECTING THE AIR-FUEL RATIO AND METHOD FOR DETECTING THE AIR-FUEL RATIO

Info

Publication number
EP2784293A4
EP2784293A4 EP11876060.2A EP11876060A EP2784293A4 EP 2784293 A4 EP2784293 A4 EP 2784293A4 EP 11876060 A EP11876060 A EP 11876060A EP 2784293 A4 EP2784293 A4 EP 2784293A4
Authority
EP
European Patent Office
Prior art keywords
detecting
air
fuel ratio
fuel
ratio
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP11876060.2A
Other languages
German (de)
French (fr)
Other versions
EP2784293A1 (en
Inventor
Keiichiro Aoki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Publication of EP2784293A1 publication Critical patent/EP2784293A1/en
Publication of EP2784293A4 publication Critical patent/EP2784293A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1439—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the position of the sensor
    • F02D41/1441—Plural sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/101—Three-way catalysts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N9/00—Electrical control of exhaust gas treating apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/1454—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio
    • F02D41/1456—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio with sensor output signal being linear or quasi-linear with the concentration of oxygen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
    • F01N2560/025—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting O2, e.g. lambda sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/04—Methods of control or diagnosing
    • F01N2900/0408—Methods of control or diagnosing using a feed-back loop
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/04—Methods of control or diagnosing
    • F01N2900/0416—Methods of control or diagnosing using the state of a sensor, e.g. of an exhaust gas sensor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M17/00—Carburettors having pertinent characteristics not provided for in, or of interest apart from, the apparatus of preceding main groups F02M1/00 - F02M15/00
    • F02M17/08—Carburettors having one or more fuel passages opening in a valve-seat surrounding combustion-air passage, the valve being opened by passing air
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Toxicology (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
EP11876060.2A 2011-11-24 2011-11-24 DEVICE FOR DETECTING THE AIR-FUEL RATIO AND METHOD FOR DETECTING THE AIR-FUEL RATIO Withdrawn EP2784293A4 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2011/077054 WO2013076842A1 (en) 2011-11-24 2011-11-24 Air-fuel ratio detection device and air-fuel ratio detection method

Publications (2)

Publication Number Publication Date
EP2784293A1 EP2784293A1 (en) 2014-10-01
EP2784293A4 true EP2784293A4 (en) 2015-08-12

Family

ID=48469320

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11876060.2A Withdrawn EP2784293A4 (en) 2011-11-24 2011-11-24 DEVICE FOR DETECTING THE AIR-FUEL RATIO AND METHOD FOR DETECTING THE AIR-FUEL RATIO

Country Status (4)

Country Link
US (1) US9890730B2 (en)
EP (1) EP2784293A4 (en)
JP (1) JP5835343B2 (en)
WO (1) WO2013076842A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114720133B (en) * 2022-04-19 2024-06-18 潍柴动力股份有限公司 A calibration method and system for air-fuel ratio of high-power gas engine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5379590A (en) * 1993-10-06 1995-01-10 Ford Motor Company Air/fuel control system with hego current pumping
US5497618A (en) * 1994-09-30 1996-03-12 Ford Motor Company Air/fuel control system with catalytic converter monitoring
EP1422398A1 (en) * 2002-11-23 2004-05-26 Adam Opel Ag Method of diagnosing the efficiency of an exhaust gas catalytic unit
US20070261960A1 (en) * 2005-04-13 2007-11-15 Toyota Jidosha Kabushiki Kaisha Oxygen Sensor and Air/Fuel Ratio Control System
WO2009106973A1 (en) * 2008-02-28 2009-09-03 Toyota Jidosha Kabushiki Kaisha Apparatus and method for diagnosing catalyst deterioration

Family Cites Families (28)

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Publication number Priority date Publication date Assignee Title
DE3809154C1 (en) * 1988-03-18 1988-12-08 Robert Bosch Gmbh, 7000 Stuttgart, De
JPH07116931B2 (en) * 1991-12-19 1995-12-18 トヨタ自動車株式会社 Device for determining catalyst deterioration of internal combustion engine
JP3179920B2 (en) * 1993-02-12 2001-06-25 株式会社日立製作所 Catalyst diagnosis device for internal combustion engine
US5528899A (en) * 1993-12-13 1996-06-25 Nippondenso Co., Ltd. Air-fuel ratio control apparatus for internal combustion engines
JP3262682B2 (en) * 1994-11-14 2002-03-04 株式会社豊田中央研究所 Air-fuel ratio sensor characteristic analyzer
US5845489A (en) * 1995-11-08 1998-12-08 Denso Corporation Abnormality detector for air-fuel ratio control system
JP3430879B2 (en) 1997-09-19 2003-07-28 トヨタ自動車株式会社 Exhaust gas purification device for internal combustion engine
US6021758A (en) * 1997-11-26 2000-02-08 Cummins Engine Company, Inc. Method and apparatus for engine cylinder balancing using sensed engine speed
JP3675283B2 (en) * 2000-02-23 2005-07-27 日産自動車株式会社 Air-fuel ratio control device for internal combustion engine
DE60116158T2 (en) 2000-02-23 2006-06-29 Nissan Motor Co. Ltd. Air-fuel ratio control system
US6739177B2 (en) * 2001-03-05 2004-05-25 Toyota Jidosha Kabushiki Kaisha Combustible-gas sensor, diagnostic device for intake-oxygen concentration sensor, and air-fuel ratio control device for internal combustion engines
JP4474817B2 (en) 2001-09-19 2010-06-09 トヨタ自動車株式会社 Catalyst deterioration detection device for internal combustion engine
US7198952B2 (en) 2001-07-18 2007-04-03 Toyota Jidosha Kabushiki Kaisha Catalyst deterioration detecting apparatus and method
JP4093190B2 (en) * 2003-03-31 2008-06-04 株式会社デンソー Gas concentration detector
JP2005133620A (en) 2003-10-29 2005-05-26 Toyota Motor Corp Exhaust gas purification device for internal combustion engine
JP2005248914A (en) 2004-03-08 2005-09-15 Toyota Motor Corp Air-fuel ratio control device for internal combustion engine
JP4265486B2 (en) 2004-06-15 2009-05-20 日産自動車株式会社 Air-fuel ratio control device for internal combustion engine
JP4415771B2 (en) 2004-06-28 2010-02-17 株式会社デンソー Gas concentration detector
JP2007032438A (en) * 2005-07-27 2007-02-08 Toyota Motor Corp Air-fuel ratio control device for internal combustion engine
JP2007232709A (en) * 2006-02-03 2007-09-13 Toyota Motor Corp Air-fuel ratio sensor failure detection device
JP2007212405A (en) * 2006-02-13 2007-08-23 Denso Corp Gas sensor, gas concentration detection system using the same, and manufacturing method thereof
JP4779835B2 (en) * 2006-07-03 2011-09-28 トヨタ自動車株式会社 Exhaust gas sensor abnormality diagnosis device
JP4329799B2 (en) * 2006-09-20 2009-09-09 トヨタ自動車株式会社 Air-fuel ratio control device for internal combustion engine
JP2009002251A (en) * 2007-06-22 2009-01-08 Toyota Motor Corp Air-fuel ratio control device for internal combustion engine
JP4380745B2 (en) * 2007-07-20 2009-12-09 トヨタ自動車株式会社 Device for acquiring degree of deterioration of catalyst of internal combustion engine
JP5045820B2 (en) * 2009-01-28 2012-10-10 トヨタ自動車株式会社 Monitoring device for multi-cylinder internal combustion engine
US8670917B2 (en) * 2009-10-06 2014-03-11 Toyota Jidosha Kabushiki Kaisha Air-fuel-ratio imbalance determination apparatus for internal combustion engine
JP2011163229A (en) * 2010-02-10 2011-08-25 Toyota Motor Corp Device for determining air-fuel ratio imbalance between cylinders of multi-cylinder internal combustion engine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5379590A (en) * 1993-10-06 1995-01-10 Ford Motor Company Air/fuel control system with hego current pumping
US5497618A (en) * 1994-09-30 1996-03-12 Ford Motor Company Air/fuel control system with catalytic converter monitoring
EP1422398A1 (en) * 2002-11-23 2004-05-26 Adam Opel Ag Method of diagnosing the efficiency of an exhaust gas catalytic unit
US20070261960A1 (en) * 2005-04-13 2007-11-15 Toyota Jidosha Kabushiki Kaisha Oxygen Sensor and Air/Fuel Ratio Control System
WO2009106973A1 (en) * 2008-02-28 2009-09-03 Toyota Jidosha Kabushiki Kaisha Apparatus and method for diagnosing catalyst deterioration

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2013076842A1 *

Also Published As

Publication number Publication date
US9890730B2 (en) 2018-02-13
JP5835343B2 (en) 2015-12-24
EP2784293A1 (en) 2014-10-01
JPWO2013076842A1 (en) 2015-04-27
US20140316678A1 (en) 2014-10-23
WO2013076842A1 (en) 2013-05-30

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